Portable docking station



FIG. 1 is a top, front and left side perspective view of a portable docking device showing our new design;

FIG. 2 is a top and front perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a top and rear side perspective view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is top and right side perspective view thereof; the left side view being a mirror image thereof.

The broken lines showing the environment is for illustrative purpose only and forms no part of the claimed design. 

The ornamental design for a portable docking station, as shown and described. 